Tooth-brush.



No. 878,486. PATENTED FEB. 4, 1908. L. H. GROWBLL, DBGD.

11.3.8: M. 0. OROWELL. EXEGUTORS.

TOOTH BRUSH. APPLICATION FILED JANfM, 1906.

Witnesses: Inventor,

I I Attorneys l UNITED STATES PATENT OFFICE.

LOVITT HAVELOOKCROWELL, OF HALIFAX, NOVA SCOTIA, CANADA; EDITH RAYCROWELL AND MAURICE OSBORNE OROWELL EXEOUTORS OF SAID LOVITT HAVELOCKCROWELL,

DECEASED.

TOOTH-BRUSH.

Specificationof Letters Patent.

- Patented Feb. 4, 1908.

Application filed January 24. 1906. Serial No. 297,656.

To all whom it may concern:

Be it known that I, LovITT HAVELOCK CRowELL, a subject of the King ofGreat Britain, residing at Halifax, county of Halifax, in the Provinceof Nova Scotia, Canada, have invented certain new and useful Imrovementsin Tooth-Brushes; and I do ereby declare that the following is a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to tooth brushes; the object of my invention is toprovide a tooth brush with means for preventing the flow of saliva ordentifrice to the hand of the user; a further object of my invention isto rovide means for removably securing a shiek to the handle of thetooth brush; a further and more specific object is to provide a brushcomprising a head, a shield and a handle, with means for fastening theparts together so that either may be easily renewed; and, myinventionconsists of the construction, combination and arran ement of parts, as

herein illustrated, described and clalmed.

In the accom anying drawings, forming part of this app ication, I haveillustrated embodiments of my invention, in which drawings similarreference characters designate corresponding parts, and in which:

Figure 1 is a side elevation of a tooth brush provided with a shield;Fig. 2 is a plan view of a head and a handle, and showing in section ashield and the method of connecting the parts, the shield being shownasa modified form of that shown in Fig. l.

The object of my invention, more specifically stated, is to provide asanitary tooth brush, first by providing a shield to prevent the flow ofsaliva from the head of the brush to the handle, and second, to providea removable head which may be renewed after a short use.

Referring to the drawings, 1 designates the head of a brush havingordinary'bristles 2, and 3 designates a handle' Secured on or formedintegral with the handle 3 adjacent the head 1, is a shield 41, which,if not formed integral with the handle, may be of any suitable material,preferably circular in shape. For the purpose of }providing a removablehead the head and andle are made separate. In this construction, asshown in Fig. 2, the head 1 is provided with a socket having interiorscrewthreads 5. The handle is rovided with a non-screw-threaded reduceportion 6, the outer end of which is provided with the screwthreads 7,shoulders 8 being left on the handle. The shield is provided with acentral bore 9, through which the reduced end is projected until theshoulders 8 bear upon the hub 10 formed around the bore 9, the walls ofthe bore 9 being disposed on the non-screw-threaded portion 6. Thescrewthreads 7 are then brought into engagement with the screw-threads 5of the head, so that the shield is locked in position. In this figure,the shield 4 is shown as cup-shaped, with its flanges extending towardsthe head 1.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

A tooth brush comprising a head and handle separably connected, acircularshield removably secured by and between said parts, and athreaded projection on the handle adapted to pass throu h said shieldand c0- operatively engage a threaded socket in the head of the toothbrush.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

LOVITT HAVELOCK CROWELL.

